Variable | At RICU admission (T0) | At study inclusion (T1) | After 24Â h (T2) | |
---|---|---|---|---|
Type of respiratory support | HFNC, N = 61 | HFNC, N = 61 | HFNC, N = 16 | NIV, N = 45 |
Diagnosis | Â | Â | Â | Â |
 COVID-19, n [IQR] | 51 [83.6] | – | 10 [62.5] | 41 [91.1] |
 ARDS, n [IQR] | 4 [6.6] | – | 1 [6.3] | 3 [6.6] |
 Pneumonia, n [IQR] | 6 [9.8] | – | 5 [31.3] | 1 [2.2] |
Clinical parameters | Â | Â | Â | Â |
 Age, years [IQR] | 70 [56–78] | – | 69 [45–75] | 70 [61–78] |
 Male sex, [%] | 42 [68.9] | – | 9 [56.3] | 33 [73.3] |
 Mean arterial pressure, mmHg [IQR] | 95 [70–105] | 95 [75–105] | 90 [70–100] | 85 [70–95] |
 Heart rate, bpm [IQR] | 86 [62–110] | 86 [62–112] | 80 [64–98] | 85 [62–112] |
 SOFA, score, [IQR] | 3 [3–3] | – | 3 [3–3] | 3 [3–3] |
 SAPSII score, [IQR] | 28 [23–33] | – | 27 [22–32] | 28 [26–33] |
 APACHEII score, [IQR] | 11 [7–14] | – | 11 [7–14] | 12 [9–15] |
 Borg scale, value [IQR] | 5 [2–8] | – | 3 [1–4] | 2 [1–4] |
Gas exchange | Â | Â | Â | Â |
 pH, value [IQR] | 7.45 [7.41–7.5] | – | 7.44 [7.40–7.49] | 7.43 [7.38–7.47] |
 PaO2, mmHg [IQR] | 64 [57–72] | – | 62 [53–78] | 67 [59–75] |
 PaCO2, mmHg [IQR] | 34 [31–39] | – | 36 [33–41] | 37 [34–41] |
 PaO2/FiO2, mmHg [IQR] | 129 [100–150] | – | 147 [118–199] | 151 [131–179] |
 Blood lactate, mmol/L [IQR] | 1 [0.4–1.8] | – | 0.8 [0.2–1.7] | 1 [0.3–1.6] |
Respiratory mechanics | Â | Â | Â | Â |
 Respiratory rate, n [IQR] | 25 [24–29] | 26 [24–29] | 23 [21–25] | 22 [20–25] |
 ΔPes, cmH2O [IQR] | 12 [10–7] | 12 [10–18] | 6.2 [4.8–7] | 8 [5.5–11] |
 ΔPnos, cmH2O [IQR] | – | 5.6 [4.2–8.0] | 3 [2–3.4] | 3.2 [2.3–5.2] |
 ΔPes/ΔPnos, value [IQR] | – | 2.2 [2.06–2.49] | 2.23 [1.89–2.60] | 2.27 [2.15–2.50] |